$box-sizes: (
  -20, -15, -12, -10, -8, -6, -5, -4, -3, -2, -1,
  0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 18, 20, 25, 30, 32, 35, 40, 50, 60, 80, 100, 200, 300);
$border-width-through: 22;
